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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) - TVS Diodes > 5KP43HE3/54
Vishay General Semiconductor - Diodes Division
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5KP43HE3/54

Manufacturer Part Number:
5KP43HE3/54
Manufacturer / Brand
Vishay General Semiconductor - Diodes Division
Part of Description:
TVS DIODE 43VWM 76.7VC P600
Datasheets:
5KP43HE3/54.pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 36589 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number 5KP43HE3/54
Manufacturer / Brand Vishay General Semiconductor - Diodes Division
Stock Quantity 36589 pcs Stock
Category Circuit Protection > Transient Voltage Suppressors (TVS) - TVS Diodes
Description TVS DIODE 43VWM 76.7VC P600
Lead Free Status / RoHS Status: ROHS3 Compliant
Voltage - Reverse Standoff (Typ) 43V
Voltage - Clamping (Max) @ Ipp 76.7V
Voltage - Breakdown (Min) 47.8V
Unidirectional Channels 1
Type Zener
Supplier Device Package P600
Series Automotive, AEC-Q101, TransZorb®
Power Line Protection No
Power - Peak Pulse 5000W (5kW)
Package / Case P600, Axial
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 175°C (TJ)
Mounting Type Through Hole
Current - Peak Pulse (10/1000µs) 65.2A
Capacitance @ Frequency -
Base Product Number 5KP43
Applications Automotive

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



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Frequently Asked Questions

Can 5KP43HE3/54 be used on a 24V automotive or industrial rail without nuisance conduction during normal operation?
5KP43HE3/54 is generally aligned with 24V-class rails because its 43V reverse standoff sits above nominal battery voltage, but the design still needs to verify the highest continuous bus voltage, charging voltage, and any tolerated overshoot. If the rail can remain near or above 43V for extended periods, 5KP43HE3/54 may start leaking and heating. For 12V rails, the standoff is too high to provide effective overvoltage clamping. On 48V systems, 5KP43HE3/54 is usually below the operating window and is not a good fit as a continuous line protector.
Is 5KP43HE3/54 enough for load dump, or only for short surge and ESD protection?
5KP43HE3/54 is a 5 kW-class TVS for short 10/1000 µs pulse energy, so its suitability depends on the actual transient waveform and source impedance. It can absorb many inductive switching events and some automotive surge pulses, but full load-dump events often last much longer and can exceed the device’s thermal capability even if the peak voltage looks acceptable. For ISO 7637 or load-dump environments, validate against the exact pulse profile rather than using peak power alone.
Where should I place 5KP43HE3/54 on the PCB to keep the clamp voltage low?
5KP43HE3/54 should be placed as close as practical to the connector or entry point of the surge so the transient current does not travel through long traces before reaching the TVS. The return path to ground or chassis should be short, wide, and low inductance. With axial P600 parts like 5KP43HE3/54, long leads and narrow copper can add inductance that raises the effective clamping voltage during fast edges, so layout often matters as much as the datasheet clamp number.
Can 5KP43HE3/54 protect against reverse battery connection, or do I need another part?
5KP43HE3/54 is a unidirectional TVS, so it is not a reverse-battery disconnect device. It can clamp negative transients in one direction, but a sustained reverse polarity event typically requires a series diode, MOSFET reverse-polarity controller, fuse, or ideal-diode circuit. In designs with field wiring mistakes, 5KP43HE3/54 is usually paired with a dedicated reverse-polarity protection element instead of being used alone.
Is 5KP43HE3/54 appropriate for AC lines or signals that swing both positive and negative?
5KP43HE3/54 is a unidirectional device, so it is generally used on DC rails or signals with a defined polarity. For AC inputs, bidirectional communication lines, or interfaces that see symmetrical positive and negative excursions, a bidirectional TVS is usually the more suitable topology. Using 5KP43HE3/54 on a line that regularly goes negative can distort normal operation and change the effective clamping behavior.
What are the closest replacement options for 5KP43HE3/54, and how do they differ in practice?
The closest alternatives to 5KP43HE3/54 depend on whether you need the same electrical threshold, the same package, or more surge margin. 5KP43A-HRA is the nearest family-level substitute when you want a similar 43V class device. 30KPA43A-HR and 15KPA43A-HRA offer different surge and packaging trade-offs, with 30KPA43A-HR generally used when higher pulse energy is needed and footprint can change. P6KE51A is not a direct electrical drop-in because its higher standoff changes the protection threshold and can leave more of the rail unprotected before clamping starts.
Can I replace an existing 5KP43A or 5KP43A-HRA with 5KP43HE3/54 on the same board?
5KP43HE3/54 is often electrically compatible with other 43V-class parts in the 5KP family, but the substitution still needs checks on automotive qualification, lead finish, package dimensions, and surge test conditions. If the original design used a non-automotive device, 5KP43HE3/54 brings AEC-Q101: qualification, which can fit automotive sourcing flows. The electrical behavior is similar, but the final decision should include footprint match, wave-solder clearances, and the actual surge waveform used in validation.
Can 5KP43HE3/54 be used on a 48V battery or 48V telecom rail?
5KP43HE3/54 is usually not the first choice for a nominal 48V rail because its 43V reverse standoff is below many normal operating ranges and tolerances for 48V systems. That can lead to unnecessary leakage, heating, or partial conduction during standard operation. For 48V buses, engineers typically select a higher-standoff TVS so the device remains inactive until a true transient occurs.
How does the through-hole P600 package of 5KP43HE3/54 affect reliability and assembly?
5KP43HE3/54 in the P600 axial package is convenient for wave soldering, manual service, and robust leaded mounting, but it occupies more PCB area than an SMD TVS and usually adds more trace inductance if the leads are left long. In vibration-prone assemblies, the lead dress, board support, and mechanical anchoring should be reviewed so the body and leads do not fatigue under repeated shock or thermal cycling. The package choice often reflects serviceability and surge handling trade-offs rather than just electrical rating.
Is 5KP43HE3/54 suitable for long-life industrial use at high temperature and repeated surges?
5KP43HE3/54 is an AEC-Q101: automotive-qualified TVS with a junction temperature range up to 175°C, so it is designed for harsh environments, but long-life performance still depends on pulse repetition, ambient derating, and board temperature. Repeated surges create cumulative heating, and a device that looks adequate for one pulse can drift into higher leakage or earlier failure if the pulse rate is high. For industrial systems, it is common to validate 5KP43HE3/54 under the expected surge count, duty cycle, and enclosure temperature rather than relying only on single-pulse ratings.

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